Lynde, Carleton John, b. 1872, Gilbert, A. C. (Alfred Carlton), 1884-1961, A.C. Gilbert Company · New Haven, CT : A.C. Gilbert Co. · leaf 54
FIG. 88BOTTLE READY TO BE CUT IN TWO it out, rotate it in a h@rizontalposition and direct the blow-pipe flame against the glassbetween the papers (Fig. 89). Continue this for four orfive minutes, then if the bottlehas not dropped apart, plungeit vertically into the pail ofwater. The bottle will… … FIG. 89HEATING THE BOTTLE GLASS BLOWING 53 peat the operation until it does. Smooth the rough edges outsideand inside with the file. You cannot do this with the flame be-cause the glass is too brittle.Experiment 68. To grind glass. Rough edges of glasscan be ground smooth bymeans of emery paper.For…
Glass blowing and working
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